On the official Delicious blog, Yahoo (which owns the service) posted an article titled What’s Next for Delicious?, saying “‘No, we are not shutting down Delicious. While we have determined that there is not a strategic fit at Yahoo!, we believe there is [an] ideal home for Delicious outside of the company where it can be resourced to the level where it can be competitive.”
That sounds like CorporateSpeak for “Anyone want to buy it?” If you have an account, it’s probably safe for now, but you should probably back up your bookmarks, just in case.